If we choose to live near convergent plate boundaries, we can build buildings that can resist earthquakes, and we can evacuate areas around volcanoes when they threaten to erupt. Yes, convergent boundaries are dangerous places to live, but with preparation and watchfulness, the danger can be lessened somewhat.
Nitrification, as stated above, is formally a two-step process; in the first step ammonia is oxidized to nitrite, and in the second step nitrite is oxidized to nitrate. Different microbes are responsible for each step in the marine environment.
Nitrate Reduction Results. 1  Purpose: Trypticase-nitrate broth is used to detect an organisms ability to reduce nitrate to nitrite or a further reduced nitrogenous compound such as nitrous oxide or nitrogen gas. 2  Principle: Nitrate may be reduce to multiple comounds by two processes. Anaerobic respiration and denitrification.